在双目立体视觉中立体匹配问题存在歧义性，是视觉研究中难点问题之。通过采用分水岭分割图像的方式有效的对图像进行了过分割处理，实现了基于图像块置信传播的匹配算法。-In the binocular stereo vision problem in stereo matching ambiguity, is the difficult problems in vision research. Images by using watershed segmentation method was effective over-segmentation of the image processing, and belief propagation based on image block matching algorithm.